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Societe B.V.S. Patents |
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Assignee: Societe B.V.S.
Address: Grenoble, FR
No. of patents: 1
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 4114705 |
Rock drilling tool having pulsed jets |
September 19, 1978 |
| In rock drilling utilizing mechanical destruction of the rock and circulation of drilling fluid for removing debris from the cutting face, the drilling fluid is directed on to the cutting face in the form of two opposed pulsed jets, the cycles of which are 180.degree. out of phase. In |
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